Fig. 5.

Direct binding of gluten-derived peptides A, B and C and the mycobacterial heat shock protein peptide MB243-255, used as a positive control, to HLA-DQ2-expressing L-cell transfectants, measured by FACS analysis. Net binding is expressed in arbitrary units, the calculation of which is described in Materials and Methods. (See Materials and Methods for amino acid sequences of the peptides.) ▵, Peptide A; ○, peptide B; □, peptide C; ▪, peptide MB243-255